Cortana not available in Belgium either on Windows Phone 8.1, Windows 10 Mobile, Android and iOS...
Perhaps, on W10M, it seems Cortana won't be related with language AND region anymore but only language. :D

Cortana on iOS, but still no Cortana on Windows 10 Mobile in Sweden...! We in Sweden can speak... english so there is no need to wait for Cortana to learn swedish, just as we in Sweden can use Google search... on Android speaking... english!

Anon, 05 Jul 2016*claps* Well done Microsoft, now you've even launched an update for iOS decides that not even ... moreIts a wise decision to jump ship from Windows phone. Since they are giving even better support for android and iOS. Because these two platforms just have the most users. Its where the money is at right now. I wouldn't be surprised if they suddenly announced within this year that they will plan to scrap WP.

*claps* Well done Microsoft, now you've even launched an update for iOS decides that not even Windows 10 Mobile has. What's next? you're gonna continue providing services for Android and iOS while neglecting us Windows users? Last time I checked, WE were the ones who spent money for your products, not them. Just wondering why you're prioritizing them over us. This is the last straw, mate. I know I may not matter to you (judging from the fact you couldn't care less about us, your loyal customers, and our wellbeing), but I'm jumping ship. Right. Fucking. Today. Huawei P9, here I come!